Valparaiso, IN 46384 Frost Dates
When can you plant in Valparaiso, IN?
Around 04/22 is the usual last spring frost, about 237 days away. The first fall frost typically arrives around 10/25, about 185 frost-free days later.
The USDA Plant Hardiness Zone Map puts Valparaiso in Zone 6a (-10 to -5°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 8 weeks of growing season left in Valparaiso before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
How much risk comes with planting early here
04/22 is the middle of 30 years of NOAA records, not a promise. Plant by 04/07 and you're betting against frost in roughly 9 years out of 10. 05/06 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Valparaiso compares
About 185 days separate Valparaiso's last and first frost, putting it 23,066 of 40,283 ZIP codes nationally. Within IN, it ranks 359 of 927.
Learn more
zone vs. frost date covers why Zone 6a and Valparaiso's frost date answer different questions. the frost range covers how to read the range around Valparaiso's dates instead of trusting one.